The model and the procedure of optimization of the periods of control and scheduled maintenance in relation to the equipment of technical systems are considered. This approach is implemented on the basis of performance of a condition of a minimum of average losses of target use of the equipment. The specified losses are possible because of non-optimal frequency of control and prophylaxis of objects of technical networks. In article the approach used in the theory of information for minimization of decrease in informative value because of breaks by its transfer is considered. Feature of the offered approach is use of integer quantization of intercontrol intervals and the accounting of casual duration of operation of the equipment. Theoretical conclusions are illustrated by settlement examples.